12656651334 has 16 divisors (see below), whose sum is σ = 26802320688. Its totient is φ = 3970714112.

The previous prime is 12656651269. The next prime is 12656651353. The reversal of 12656651334 is 43315665621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62042307 + ... + 62042510.

It is an arithmetic number, because the mean of its divisors is an integer number (1675145043).

Almost surely, 2^12656651334 is an apocalyptic number.

12656651334 is an abundant number, since it is smaller than the sum of its proper divisors (14145669354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12656651334 is a wasteful number, since it uses less digits than its factorization.

12656651334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124084839.

The product of its digits is 388800, while the sum is 42.

The spelling of 12656651334 in words is "twelve billion, six hundred fifty-six million, six hundred fifty-one thousand, three hundred thirty-four".